£54- DEMONSTRATIO SINGVLARIS 



atqiie aJco iii gcncrc 



Si igitiir f()rmiil;i (A) pro valorc quocunqiic littcrae 

 f/i veritati fuerit conrcntaiica , nullum c(l dubium , 

 quin vern quoqiic fit , fi in locum ipfius ?n fublU- 

 tuatur w -H « , defi^nante ;; numcrum quemcunque 

 intcgrnm pofitiuum. Quum autcm pofito w— i 

 oriatur aequatio identica y (t. z — d^.y z — o \ liquet 

 quoque hinc in genere cfle pro numcro quocunque 

 VI intcgro ct pofitiuo : 



vbi vltimum membrum figno ~\~ nfficictnr , fi m 

 fuerit numerus par , contra vero fi inipar. 



IV. Loco Lcmmatis allati , aliud miilto ge- 

 neralius proponi potoifiTct ita exprcffum : Si fiierii 

 J^d'^.z-Ky'^-' ^^ j z -f- H;— ^-^ >^-' d^. f z 

 -.M2Lr^;i^)/- = ^-j/'c4-ctc.-o 

 erit quoqiie 



y^-^ur'-^'.z -(x+ i]/(r'-^\ yz+^^^f^j'^-'i^'"-^'. /z 



->:i^ill!ArriJ/-'^--+-. y c: 4- ctc. - o. 

 Patct vcro demonftrationem huius Lemmatis , fimili 

 rationc adornari dcbcrc ac pro Lcmmatc praccedcntc, 

 Yt vcro in gcncrc liqucat tirc : 



